Yeah, it's a great little amp. Not tubey but takes away most of the harshness and adds lots of soundstage.
Glad you like it so far!
So a viable test would be to have a variety of HD800s over the serial range and have them all burned in (let's say 100 hours for peace of mind). Put brand new pads on all of them. Listen through same cable and same rig and then decide.
Wait... you remember the exact date from 3 years ago? You're not by any chance Julian Gregory Day are you?
Nah. Sold once because my mid-tier rig didn't impress me with them-and at the time I wasn't aware of how well they could scale. Sold another for financial reasons at the time. Sold another to a friend who heard my rig and just HAD to have them...on the spot lol. So I helped him out. ;)
Yeah right. Head-Fi search.
My 800s are in the 6900s. That much I can remember.
Just kidding, I had to look.
No No....Some days are just that important!
In all honesty I purchased the 26xxx serialized HD-800, listened to them for 2 days and really liked what I heard right out of the box. Noticed however that one of the ear pads had a large crease in it that drove me nuts (O.C.D lol).
I packed them up and brought them back to the retailer and exchanged for the 28xxx which was a perfect sample cosmetically....the sound however was intolerable. Brighter than my GS-1000 (that I hold onto for sentimentality reasons). They went back the day after and I ended up with my originally purchased 26xxx (had Sennheiser Canada send me new pads)
The rest is history like they say.
The difference was like night and day to my ears. Due to the fact that these comparisons between two HD-800 were done days apart I feel that my acoustic memory held truth and was accurate enough to hear the difference.
The fact that both frequency charts arrived via email one week later proved what I was hearing.
The idea that each sample HD-800 may sound different to one another holds water to me.
I don't think that batch number has any relevance here, it is on a per HD-800 basis. Some owners of earlier versions were gifted with a pair that were warm, or almost neutral sounding, while others complained of brightness, lack luster bass ....etc.
Some frequency charts were all over the map while others retained hints of neutrality.
For those that question this I suggest that the perfect scenario would be to compare not only just two HD-800's (chances are they may sound almost identical) but to find two pairs that do in fact sound like different beasts.
Definitely a hard experiment to replicate unless by just luck of the draw.
Yes it would appear that the K812 may be suffering from the same issue.
Like I said YMMV